Montgomery Clift

~ as ~

Professor James Bower

Hardy Krüger

~ as ~

Counselor Peter Heinzmann

Macha Méril

~ as ~

Frieda Hoffmann

David Opatoshu

~ as ~

Orlovsky

Christine Delaroche

~ as ~

Ingrid Weiß

Hannes Messemer

~ as ~

Dr. Saltzer

Karl Lieffen

~ as ~

Major Windisch

Uta Levka

~ as ~

Mädchen unter der Dusche

Roddy McDowall

~ as ~

Agent Adams

Johannes Buzalski

~ as ~

Agent (uncredited)